diff options
Diffstat (limited to 'lib/LintWriter.hs')
-rw-r--r-- | lib/LintWriter.hs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/LintWriter.hs b/lib/LintWriter.hs index fa8207b..5a6fc7d 100644 --- a/lib/LintWriter.hs +++ b/lib/LintWriter.hs @@ -7,6 +7,7 @@ {-# LANGUAGE OverloadedStrings #-} {-# LANGUAGE RankNTypes #-} {-# LANGUAGE TupleSections #-} +{-# LANGUAGE DeriveFunctor #-} {-# OPTIONS_GHC -Wno-missing-signatures #-} -- | a monad that collects warnings, outputs, etc, @@ -67,6 +68,7 @@ type LintWriter' ctxt res = -- | it already collected. newtype LinterState ctxt = LinterState { fromLinterState :: ([Lint], ctxt)} + deriving Functor -- | The result of running a linter: an adjusted context, and a list of lints. -- | This is actually just a type synonym of LinterState, but kept seperately |